Hardened teeth on the smaller sprocket of a roller chain drive are recommended if the drive ratio is four to one or greater or if the smaller sprocket has 24 teeth or less and is running at a speed of over 600 rpm.
features
Hardened teeth sprockets afford longer chain and sprocket life
Tolerances meet or exceed ANSI standards
Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bores are concentric to pitch line, minimizing run out
Interchangeable with other manufacturers’ Taper bushings
Stocked Heat Treat
Sprocket Style
B
Pitch Dia.
2.898 in
Overall Length
7/8 in
Bushing Bore [Max]
1 in
Martin No.
60BTB12H
No. of Teeth Rows Strands
1
Bushing Bore [Min]
0.5 in
O.D.
3.249 in
Material Internal Use
Carbon Steel
Pitch Diameter
2.898 in
Bushing Type
Taper Lock
Bushing Bore Size [Max]
1 in
Type
B
Width Across Teeth
0.875 in
Hub Dia.
1 15/16 in
Hardened Teeth
With Hardened Teeth
Bushing Series
1008
Material
Steel
No. of Teeth
12
Hub O.D.
1.938 in
Chain No.
60
Bore Size [Min]
0.5 in
Chain Pitch
0.750 in
Hub Length
0.42 in
Single Strand Tooth Thickness
0.459 in
Outside Dia.
3.249 in
Bore Type
Bushed
Hub Projection
0.42 in
Chain Sprocket Pitch
0.75 in
Construction Internal
Solid
Caliper Diameter
2.4288 in
No. of Strands Across
1
Tooth Width
0.459 in
Bushing Bore Size [Min]
0.5 in
Chain Sprocket Number
60
Outside Dia. [Min]
3.2490 in
Material External Use
Steel
Inch/Metric
Inch
Overall Length Less Threads
N/A
Bore Size [Max]
1 in
Length Through Bore
0.875 in
Weight
0.78 LB
EAN or UPC
697950043326
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